Update the default OCP install to 4.18 now

[akrzos]

No description provided.

[openshift-ci]

Skipping CI for Draft Pull Request.
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[openshift-ci]

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This pull-request has been approved by: akrzos

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[akrzos]

/test deploy-5nodes

[akrzos]

/test deploy-sno

[akrzos]

/lgtm

[openshift-ci]

@akrzos: you cannot LGTM your own PR.

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/lgtm

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[josecastillolema]

/lgtm